Improved lubricating compound



NITED STATES ATENT OFFICE.

llVlPROVED LUBRICATING COMPOUND.

Specification forming part of Letters Patent No. 11,840, dated March 8,1864.

To all whom it may concern:

Be it known that I, GEORGE W. GLADDEN, of Cincinnati, Hamilton county,Ohio, have invented a new and useful Lubricant; and I do hereby declarethe following to be a full, clear, and exact description of theingredients and of the mode of compounding" the same. V

The objectof my invention is a composition of matter adapted for thelubrication'of rubbing-surfaces, and having the following advantages:

First, it is not liable to become hard orgummy, like coal-tar and manyother lubricants.

Second, it possesses the singular property of remaining moist orsemi-fluid until entirely Worn out.

Third, it is but little affected by changes of temperature.

Fourth, it is remarkably exempt from the liability of burning on theaxle.

Fifth, its cost is less than half that of pine tar, to which it is farsuperior in quality as an efficient and enduring lubricant.

My lubricant is composed and compounded in manner followingi Take, bymeasure, residuum from the distillation of rock-oil or petroleum, suchas willhave the consistence of thick molasses at a temperature of 60Fahrenheit,

two parts; common pine-tar, one part; pulverized black-lead, one part.Melt, without boiling, the residuum and thepine-tar together, and whenwell blended stirin slowly the blacklead. The whole process afterpulverization ot' the black-lead should consume about halt an hour. WhenWell blended the composition may be poured into casks. or other vesselsfor use.

I claim herein as new and of my invention A lubricant composed ofresiduum from the distillation of petroleum, pine-tar, and plumbago,compounded substantially in proportions and manner specified.

In testimony of which invention I hereunto set my hand. GEORGE W.GLADDEN. 'Witnesses:

Gno. H. KNIGHT, E1). M. BROWN.

